Application of pyrite and chalcopyrite as sensor electrode for amperometric detection and measurement of hydrogen peroxide

Wang, Yufeng; Zhao, Kun; Tao, D.; Zhai, F. G.; Yang, Haiming; Zhang, Z. Q.

doi:10.1039/c7ra13628e

Cited by 15 publications

(9 citation statements)

References 56 publications

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“…2B are in accordance with FeS2, which is the main content of pyrite. 14 The typical diffraction peaks are in consistent with the corresponding components. As shown in Fig.…”

Section: Characterization Of Pr and Pr/ag Modified Electrode Surfacesupporting

confidence: 58%

“…12,13 In our previous work, we constructed an H2O2 electrochemical sensor by using natural pyrite and chalcopyrite in a mild solution. 14 It provides an application platform for sulfide minerals in the field of electrochemical sensor. To further explore the applicability of natural sulfide minerals, the modified pyrite was prepared to evaluate the electrochemical performance toward the measurement of H2O2 in this study.…”

Section: Introductionmentioning

confidence: 99%

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Molten-salt-composite of Pyrite and Silver Nanoparticle as Electrocatalyst for Hydrogen Peroxide Sensing

Zhao

Wang

Wang³

et al. 2021

ANAL. SCI.

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A conductive molten salt was synthesized by using natural pyrite (PR) and silver nanoparticles (Ag) at 450°C using a molten salt method. The molten-salt-composite (PR/Ag) was used as an electrocatalyst to detect hydrogen peroxide (H2O2). The as-prepared PR/Ag possessed higher conductivity than natural PR. It exhibited a high sensitivity of 603.54 μA mM -1 cm -2 for the detection of H2O2, with a linear range of 0.1 to 30 mM, and a detection limit of 0.02 mM (S/N = 3). In addition, the PR/Ag sensor exhibited good selectivity to H2O2, resisting interference from other potential interferent compounds (e.g. uric acid, glucose, fructose and common metal ions (K + , Mg 2+ , Na + )). The approach is considered to provide a sensitive, selective, and reliable tool for highly detection of H2O2.

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“…2B are in accordance with FeS2, which is the main content of pyrite. 14 The typical diffraction peaks are in consistent with the corresponding components. As shown in Fig.…”

Section: Characterization Of Pr and Pr/ag Modified Electrode Surfacesupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Molten-salt-composite of Pyrite and Silver Nanoparticle as Electrocatalyst for Hydrogen Peroxide Sensing

Zhao

Wang

Wang³

et al. 2021

ANAL. SCI.

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show abstract

“…The other plausible reason for the selected applied potential of −0.5 V is that the baseline also decreased with a relatively high applied potential (close to −0.5 V), which would also be expected to decrease the reduction-oxidation reactions of the interfering species. So, an applied potential of −0.5 V was chosen as the best applied potential for the subsequent experiments [24,25]. During the stepwise electrochemical immunosensor construction process, the electrochemical behaviors of the stepwise modified electrodes were evaluated by the amperometry and EIS.…”

Section: Resultsmentioning

confidence: 99%

Construction of a Label-Free Electrochemical Immunosensor Based on Zn-Co-S/Graphene Nanocomposites for Carbohydrate Antigen 19-9 Detection

Tian

et al. 2021

Nanomaterials

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Nanocomposites of the binary transition metal sulfide Zn-Co-S/graphene (Zn-Co-S@G) were synthesized through a one-step hydrothermal method. They may be useful in the construction of an electrochemical immunosensor for carbohydrate antigen 19-9 (CA19-9) detection. Zn-Co-S dot-like nanoparticles uniformly covered the surface of graphene to form an interconnected conductive network, ensuring strong interaction between transition metal sulfide and graphene, which can expose numerous electroactive sites leading to the improvement of the amplified electrochemical signal toward a direct reduction of H2O2. Thus, the construction of an electrochemical immunosensor using Zn-Co-S@G nanocomposites showed outstanding sensing properties for detecting CA19-9. The constructed electrochemical immunosensor exhibited a good linear relationship in the range of 6.3 U·mL−1–300 U·mL−1, with the limit of detection at 0.82 U·mL−1, which makes it a promising candidate for an electrochemical immunosensor.

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“…It has been used as a cathode material for thermal batteries due to its excellent properties such as suitable redox electromotive force, high thermodynamic stability, suitable conductivity, and a fixed platform that can be charged and discharged [28]. Owing to the excellent electrochemical performance and the ability to transfer heterogeneous electrons, it has been studied extensively in electrochemical catalysis and sensing [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

An amperometric glucose biosensor based on electrostatic force induced layer-by-layer GOD/chitosan/pyrite on a glassy carbon electrode

Wang

Ying

et al. 2022

ANAL. SCI.

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Pyrite (PR), as a representative sulfide mineral, possesses the advantages of abundant, thermodynamically stable, non-toxicity and semi-conductivity. In this study, an amperometric glucose biosensor (GOD/CS/PR/GCE) based on layer-by-layer of glucose oxidase (GOD), chitosan (CS) and pyrite (PR) on glassy carbon electrode (GCE) was fabricated through electrostatic force. In this research, PR suspension prepared in phosphate buffer (pH 5.5) was first immobilized on the GCE surface, which exhibits negative charge. Then, positively charged CS was adsorbed on PR/GCE by electrostatic force. Finally, negatively charged GOD was further modified on the CS/PR/GCE surface through electrostatic force again. The surface morphology and adsorbed mechanism were supported by field emission scanning electron microscopy (SEM), quartz crystal microbalance with dissipation (QCMD) and atomic force microscope (AFM). The step-by-step procedure gives both a strong adhesion ability and a good bioelectrocatalytic activity of GOD on the CS and PR modified electrode surface. The linear range of this GOD/CS/PR/GCE biosensor was achieved from 0.5 mM to 60 mM with the Linear regression equation of y = 0.897x -0.3016 (R 2 = 0.9996) and a limit of detection (LOD) value of 50 µM. This approach of using pyrite and chitosan as physical modified GOD to serve as electrostatic glues, which could be useful for designing better enzyme based biosensors for a wide variety of practical applications.

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Application of pyrite and chalcopyrite as sensor electrode for amperometric detection and measurement of hydrogen peroxide

Abstract: The sensing performance of solid-state amperometric sensors based on natural sulfide minerals, i.e., pyrite and chalcopyrite, has been characterized for the detection and measurement of hydrogen peroxide (H2O2) in aqueous medium.

Cited by 15 publications

References 56 publications

Molten-salt-composite of Pyrite and Silver Nanoparticle as Electrocatalyst for Hydrogen Peroxide Sensing

Molten-salt-composite of Pyrite and Silver Nanoparticle as Electrocatalyst for Hydrogen Peroxide Sensing

Construction of a Label-Free Electrochemical Immunosensor Based on Zn-Co-S/Graphene Nanocomposites for Carbohydrate Antigen 19-9 Detection

An amperometric glucose biosensor based on electrostatic force induced layer-by-layer GOD/chitosan/pyrite on a glassy carbon electrode

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